B-138 Series, Rated up to 60 Amps, 115/200 VAC, 400... HARTMAN Power Switching AC Contactors Product Facts
... Contact Arrangement — TPST NO and TPDT NC Rated Operating Voltage — 115/200 VAC, 400 Hz, 3 phase Current, Resistive — 60 Amps Current, Inductive — 60 Amps Current, Motor — 60 Amps Current, Rupture — 600 Amps ...
... Contact Arrangement — TPST NO and TPDT NC Rated Operating Voltage — 115/200 VAC, 400 Hz, 3 phase Current, Resistive — 60 Amps Current, Inductive — 60 Amps Current, Motor — 60 Amps Current, Rupture — 600 Amps ...
Implementation of Low-Dropout Regulator with Efficient Power
... Abstract: As demand rises for electronic devices to be smaller, faster, and more efficient, increasing importance is placed on well designed voltage regulators for power supplies. When space is limited, as in the case of portable devices, circuitry for multiple functions requires multiple voltage le ...
... Abstract: As demand rises for electronic devices to be smaller, faster, and more efficient, increasing importance is placed on well designed voltage regulators for power supplies. When space is limited, as in the case of portable devices, circuitry for multiple functions requires multiple voltage le ...
BSNL_TTA_Electricalspecialization
... 36. The current in circuit having 5 V EMI source and 10 Ohm resistance is: a. 2 Amp b. 50 Amp c. 5 Amp d. ½ Amp 37. The chopper is a device to change a. Voltage b. Current c. Frequency d. None of these 38. The power consumption, in case of centrifugal loads (like pump, fan, blower etc) is proportion ...
... 36. The current in circuit having 5 V EMI source and 10 Ohm resistance is: a. 2 Amp b. 50 Amp c. 5 Amp d. ½ Amp 37. The chopper is a device to change a. Voltage b. Current c. Frequency d. None of these 38. The power consumption, in case of centrifugal loads (like pump, fan, blower etc) is proportion ...
SECTION (ELECTRICAL) 1. In a D.C. generator, if the brushes are
... 3. Two series motors are coupled. One motor runs as generator and other as motor. The friction losses of the two machines will be equal when a. Both operates at same voltage b. Both have same back emf c. Both have same speed d. both have same excitation ...
... 3. Two series motors are coupled. One motor runs as generator and other as motor. The friction losses of the two machines will be equal when a. Both operates at same voltage b. Both have same back emf c. Both have same speed d. both have same excitation ...
FAN7554 Versatile PWM Controller Features Description
... time. That is, the FAN7554 needs the time to detect and decide whether it is an overload condition or not. The protection circuit can be prevented from operating during transient states by ensuring that a certain amount of time passes before the protection circuit operates. The above operations are ...
... time. That is, the FAN7554 needs the time to detect and decide whether it is an overload condition or not. The protection circuit can be prevented from operating during transient states by ensuring that a certain amount of time passes before the protection circuit operates. The above operations are ...
SF6 CB
... “A device that detects the fault and initiates the operation of the Circuit breaker to isolate the defective element from the rest of the system”. * The relays detect the abnormal conditions in the electrical circuits by constantly measuring the electrical quantities which are different under normal ...
... “A device that detects the fault and initiates the operation of the Circuit breaker to isolate the defective element from the rest of the system”. * The relays detect the abnormal conditions in the electrical circuits by constantly measuring the electrical quantities which are different under normal ...
AN-6075 Compact Green-Mode Adapter Using FSQ500L for Low Cost 1. Introduction www.fairchildsemi.com
... Overload is defined as the load current exceeding normal level due to an unexpected abnormal event. In this situation, the protection circuit should trigger to protect the SMPS. However, even when the SMPS is in normal operation, the over load protection circuit can be triggered during the load tran ...
... Overload is defined as the load current exceeding normal level due to an unexpected abnormal event. In this situation, the protection circuit should trigger to protect the SMPS. However, even when the SMPS is in normal operation, the over load protection circuit can be triggered during the load tran ...
dk 100 200 b420 b - Europower Components Ltd
... ●● Power supplies DC power or auxiliary loads measurement ●● Electric heating elements Faster response than temperature transducers. ...
... ●● Power supplies DC power or auxiliary loads measurement ●● Electric heating elements Faster response than temperature transducers. ...
AD1866 - inst.eecs.berkeley.edu
... designed to operate from a +5 V supply. This pin should be bypassed to digital common using a 0.1 µF capacitor, again placed as close as possible to the package pins. Figure 7 illustrates the correct connection of the digital and analog supply bypass capacitors. An important feature of the AD1866 au ...
... designed to operate from a +5 V supply. This pin should be bypassed to digital common using a 0.1 µF capacitor, again placed as close as possible to the package pins. Figure 7 illustrates the correct connection of the digital and analog supply bypass capacitors. An important feature of the AD1866 au ...
Micronote 126 - Lightning Protection for Aircraft per
... threat current of 58 A is well within its capability. In practice, resistors are often used in series on each data wire for impedance matching, hence further reducing the incident current and providing an increased guard band for protection of data transfer line interfaces. Please be certain that te ...
... threat current of 58 A is well within its capability. In practice, resistors are often used in series on each data wire for impedance matching, hence further reducing the incident current and providing an increased guard band for protection of data transfer line interfaces. Please be certain that te ...
CIRCUIT FUNCTION AND BENEFITS
... current sinks allow 10.3 mA and 15.2 mA to flow through the red and infrared LEDs, respectively. To maximize battery life, the current sinks are turned on only when needed. One half of the ADG1636 SPDT analog switch is used to connect/disconnect the 1.25 V voltage reference to/from each current circ ...
... current sinks allow 10.3 mA and 15.2 mA to flow through the red and infrared LEDs, respectively. To maximize battery life, the current sinks are turned on only when needed. One half of the ADG1636 SPDT analog switch is used to connect/disconnect the 1.25 V voltage reference to/from each current circ ...
building aq meter
... The sine wave appearing at the emitter of Q4 is buffered by emitter follower Q6 which in turn drives a wideband power amp Q7. This stage has a bandwidth of around 70MHz and drives the test circuit. It also drives Q8 providing an output for a frequency counter and/or for use as a 50 ohm signal sourc ...
... The sine wave appearing at the emitter of Q4 is buffered by emitter follower Q6 which in turn drives a wideband power amp Q7. This stage has a bandwidth of around 70MHz and drives the test circuit. It also drives Q8 providing an output for a frequency counter and/or for use as a 50 ohm signal sourc ...
Simulation and fabrication of single phase Z-Source inverter for resistive load Meera Murali, Prathamesh Deshpande, Burhanuddin Virpurwala, Piyusha Bhavsar
... efficiency, reliability, etc. In an attempt to overcome these disadvantages, from the year 2002 a new concept was introduced which combines the effects of both voltage source and current source. The basic concept of impedance network was developed by Fang Z. Peng in 2002, [1]. In his paper, he prese ...
... efficiency, reliability, etc. In an attempt to overcome these disadvantages, from the year 2002 a new concept was introduced which combines the effects of both voltage source and current source. The basic concept of impedance network was developed by Fang Z. Peng in 2002, [1]. In his paper, he prese ...
CIRCUIT FUNCTION AND BENEFITS
... has at least one layer for the ground plane. Each IC power pin must be decoupled with a 0.1 µF low inductance ceramic capacitor as shown in Figure 1. Some power pins have an additional smaller value decoupling capacitor (low ESL) for extremely high frequencies. The “0 Ω” resistors on the schematic r ...
... has at least one layer for the ground plane. Each IC power pin must be decoupled with a 0.1 µF low inductance ceramic capacitor as shown in Figure 1. Some power pins have an additional smaller value decoupling capacitor (low ESL) for extremely high frequencies. The “0 Ω” resistors on the schematic r ...
R8184G Protectorelay Oil Burner Control
... valve still shut off, fuel supply line to burner empty) wait at least 5 minutes for the safety switch to cool, reset the safety switch, run through the starting procedure and safety switch should lock out as in flame failure test. 3. Power failure - turn off power supply burner is on. When burner ...
... valve still shut off, fuel supply line to burner empty) wait at least 5 minutes for the safety switch to cool, reset the safety switch, run through the starting procedure and safety switch should lock out as in flame failure test. 3. Power failure - turn off power supply burner is on. When burner ...
Application Report Long Drive/Motor Leads
... to strip the high frequency component from the PWM output, as well as slow down the rise time to approximately 1.2 µs. This ensures that the motor windings will see a clean PWM signal. Why IGBTs ? • The extremely fast turn on time correlates to lower energy losses in the device, allowing for smaller ...
... to strip the high frequency component from the PWM output, as well as slow down the rise time to approximately 1.2 µs. This ensures that the motor windings will see a clean PWM signal. Why IGBTs ? • The extremely fast turn on time correlates to lower energy losses in the device, allowing for smaller ...
CD54HC377/3A CD54HCT377/3A Octal D-Type Flip-Flop with Data Enable Functional Diagram
... TA = -55oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at 8mW/ oC to 300mW Operating Temperature Range, TA Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature, TST ...
... TA = -55oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at 8mW/ oC to 300mW Operating Temperature Range, TA Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature, TST ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.